Page:Wood 1865 - The Myriapoda of North America.djvu/53

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188
THE MYRIAPODA OF NORTH AMERICA.

Deep orange, polished; body anteriorly strongly, but posteriorly slightly narrowed; head small; cephalic segment suborbicular, impunctate; antennæ rather long, filiform, not acuminate, sparsely pilose, articles somewhat obconic; mandibles thick, sparsely shortly pilose, obscurely tridenticulate; anterior denticule on each side, large, conical acute; labium broad, short, impunctate, scarcely emarginate, impressed with an obscure median sulcus; scuta without sutures; feet rather long, slender, with a few short hairs, together with the ventral surface dirty orange, on each side 71; last pair (in female only?) small, slender; sterna impressed with the sterno-episternal sutures and a median sulcus.


S. parviceps, Wood, Journ. A. N. S., new series, vol. v, 1863, p. 49.

In the only specimen that I have seen the mandibles are perfect, with the exception that they lack the mandibular tooth, probably the result of an accident; but it is rather curious that both should be lost and the remainder of mandibles be uninjured. The head appears to be destitute of punctations. Length, 2¼ inches.

Hab. California.—Smithsonian Collection.


S. epileptica.

Fig. 21Fig. 22

S. polita; corpore antice valde sed postice modice angustato, supra saturate sed subtus dilute aurantiaco; capite parvo; segmento cephalico suborbiculare, albomaculato; segmento basali subbasali longiore; antennis longis, filiformibus, haud acuminatis, partim pubescentibus, articulis nonnihil obconicis; mandibulis crassis, distincte tridenticulatis, denticulo antico magno, conico, acuto; labio convexo, copiose minute albomaculato, antice leviter emarginato, sulco mediano impresso; scutis longis, latis, sine suturis; pedibus gracilibus, modice longis, dilute aurantiacis, utrinque 81; pari postremo (in femina solum ?) parvo, gracile, haud antenniforme; sternis suturis sterno-episternalibus et sulco mediano impressis. (Figs. 21, 22.)

Polished; body anteriorly strongly, but posteriorly moderately narrowed. Above deep, below dilute orange; cephalic segment suborbicular, sparsely minutely spotted with white; basal segment longer than the subbasal; antennæ long, filiform, not acuminate, partly pubescent; joints somewhat obconic; mandibles thick, distinctly tridenticulate; anterior denticule large, conical, acute; labium convex, copiously minutely spotted with white; anteriorly somewhat emarginate, impressed with a median sulcus; scuta long, broad, without sutures; feet slender, rather long, light orange, on each side 81; last pair (in female only?) small, slender, not antenniform; sterna impressed with sterno-episternal sutures and a median sulcus.